公开(公告)号：US20240146204A1

公开(公告)日：2024-05-02

申请号：US18279065

申请日：2021-08-02

Applicant: ALTENERGY POWER SYSTEM INC.

Inventor： Yunjie MO ,  Yongchun YANG ,  Biaojie QI ,  Yuhao LUO

IPC: H02M3/335 ,  H02M1/00 ,  H02M1/08 ,  H02M3/00

CPC classification number: H02M3/33592 ,  H02M1/0043 ,  H02M1/0058 ,  H02M1/083 ,  H02M3/01

Abstract: A phase-shifted full-bridge converter, and a method and a device for controlling the phase-shifted full-bridge converter are provided. The method includes: acquiring a current currently inputted to the phase-shifted full-bridge converter; determining, based on a correspondence between inputted currents and operation modes, an operation mode corresponding to the current currently inputted to the phase-shifted full-bridge converter; and acquiring, from maximum power point tracking in the determined operation mode, a phase angle for the phase-shifted full-bridge converter and a switching frequency of a switch transistor in the phase-shifted full-bridge converter, to control the switch transistor to operate based on the phase angle and the switching frequency.

公开(公告)号：US20220255459A1

公开(公告)日：2022-08-11

申请号：US17610452

申请日：2020-02-17

Applicant: ALTENERGY POWER SYSTEM INC.

Inventor： Jian WU ,  Biaojie QI ,  Yongchun YANG ,  Yuhao LUO

IPC: H02M7/5387 ,  H02M1/12 ,  H02S40/32

Abstract: A three-phase grid-connected inverter, and a method and a device for controlling the three-phase grid-connected inverter are provided. The method is applied to a three-phase three-leg grid-connected inverter. A structure of the three-phase three-leg grid-connected inverter is improved, so that a filter capacitor (C1, C2, and C3) is connected to a negative electrode of a direct current input bus to form a harmonic bypass circuit. Inverter devices connected in parallel in the system operate stably without increase of inductance of an inductor (L1, L2, L3). In addition, the three-phase three-leg grid-connected inverter according to the present disclosure operates in a discontinuous mode of inductor current (iL1, iL2, and iL3). That is, in the process that a power switch transistor (Q1, Q2, Q3, Q4, Q5 and Q6) on bridge legs is turned on, the inductor current (iL1, iL2, and iL3) drops to zero.

公开(公告)号：US20220255420A1

公开(公告)日：2022-08-11

申请号：US17432935

申请日：2019-12-18

Applicant: ALTENERGY POWER SYSTEM INC.

Inventor： Biaojie QI ,  Jian WU ,  Yongchun YANG ,  Yuhao LUO

IPC: H02M1/12 ,  H02M7/5387

Abstract: A three-phase grid-connected inverter, a control system thereof and a control method therefor. The inverter is a three-phase three-leg grid-connected inverter, and a filter capacitor is connected to a negative electrode of a DC input bus to form a filter loop, so as to filter harmonic wave in the circuit, realizing high-quality grid-connected current at small power, without increasing an inductance value, so that the parallel inverter device in the system operates stably and thus is applicable to photovoltaic microinverters. Moreover, the three-phase three-leg grid-connected inverter operates in a discontinuous conduction mode, that is, in a switching cycle, the inductive current is reduced to 0, so that the switching loss of the three-phase three-leg grid-connected inverter is reduced.

公开(公告)号：US20250015755A1

公开(公告)日：2025-01-09

申请号：US18711630

申请日：2022-04-29

Applicant: ALTENERGY POWER SYSTEM INC.

Inventor： Dongming ZHOU ,  Yuhao LUO

IPC: H02S40/34

Abstract: A photovoltaic solar assembly and a switching method therefor. The photovoltaic solar assembly includes an execution junction box, a single master control junction box, and a plurality of solar cell strings that are connected in series; the execution junction box includes a corresponding bypass diode; the master control junction box includes a corresponding bypass diode and a control assembly, and the control assembly is merely arranged in the master control junction box; the solar cell strings are connected in series with each other by means of the corresponding bypass diode of the execution junction box or the corresponding bypass diode of the master control junction box; and the control assembly is used for controlling connection and disconnection between the solar cell strings and a main power circuit.

公开(公告)号：US20240405570A1

公开(公告)日：2024-12-05

申请号：US18699309

申请日：2022-02-23

Applicant: ALTENERGY POWER SYSTEM INC.

Inventor： Kaifeng JIN ,  Dongming ZHOU ,  Yuhao LUO

IPC: H02J3/46

Abstract: A method and a device for a current source to respond, and a computer-readable storage medium are provided. Parallel control for the current source and a voltage source is established, and a voltage across an alternating-current bus is acquired. When the voltage is lower than a first threshold, the current source outputs a current to increase the voltage across the alternating-current bus. Then, it is determined whether the voltage exceeds a second threshold. When the voltage exceeds the second threshold, the current source stops outputting the current. When the voltage does not exceed the second threshold, power is distributed between the current source and the voltage source after power synchronization. The current source directly outputs the current, and therefore unnecessarily wait for the power from the voltage source.

公开(公告)号：US20240275159A1

公开(公告)日：2024-08-15

申请号：US18568821

申请日：2021-07-08

Applicant: ALTENERGY POWER SYSTEM INC. ,  ZHEJIANG INTEPOWER ELECTRONIC CO., LTD.

Inventor： Dongming ZHOU ,  Yuhao LUO ,  Xiao LU ,  Fei SHEN ,  Xuan ZHU

IPC: H02H3/08 ,  G06F1/30 ,  H02H1/00

CPC classification number: H02H3/08 ,  G06F1/30 ,  H02H1/0007

Abstract: A method and an apparatus for controlling a shutoff device, and a shutoff device. The shutoff device includes N main switching transistors and N bypass switching transistors. The method includes: controlling the N main switching transistors to be turned on after receiving a heartbeat signal; determining whether a power supply voltage of a processor is less than a first under-voltage protection voltage; and if so, controlling the N main switching transistors to be turned off, and controlling the N bypass switching transistors to be turned on. Thus, N photovoltaic modules and N main switching transistors corresponding to a shutoff device are separated from multiple photovoltaic module groups, so that the photovoltaic module groups corresponding to other shutoff devices can normally output DC voltage to an inverter, and the inverter can normally output AC power for integration into a power grid, thereby ensuring the normal operation of the photovoltaic system.

公开(公告)号：US20240039289A1

公开(公告)日：2024-02-01

申请号：US18265946

申请日：2021-12-07

Applicant: ALTENERGY POWER SYSTEM INC.

Inventor： Yongchun YANG ,  Guoyong HUA ,  Biaojie QI ,  Yuhao LUO

IPC: H02J3/38 ,  H02J3/46

CPC classification number: H02J3/381 ,  H02J3/46 ,  H02J2300/24

Abstract: A power supply system and a solar photovoltaic inverter, a DC/DC module and a rectification module. Since a power supply outputted from a solar panel is low-voltage power, the power supply at an output end of the solar panel can be directly supplied to a DC driving module and a DC side circuit. Since a power supply outputted from a main transformer is high-voltage power, the AC outputted from the main transformer can be directly supplied to an inverter driving module, a rectification driving module, and an AC side circuit, without additionally providing an auxiliary power supply for high-voltage isolation, namely, without additionally providing a switching circuit, a transformer, a second rectifier module, and a third rectifier module, thereby avoiding the noise and power consumption caused by frequent ON or OFF of the switching circuit, and reducing the cost.

公开(公告)号：US20140062198A1

公开(公告)日：2014-03-06

申请号：US14076006

申请日：2013-11-08

Applicant: Altenergy Power System, Inc.

Inventor： Yuhao LUO

IPC: H02J3/38

CPC classification number: H02J3/38 ,  H02J3/385 ,  H02M1/14 ,  H02M7/4807 ,  Y02E10/58 ,  Y10T307/492

Abstract: The invention provides a solar photovoltaic three-phase micro-inverter, comprising DC terminals, connected with three DC photovoltaic assemblies for receiving DC; three single-phase inverter circuits, having DC input terminals connected with the DC photovoltaic assemblies via the terminals, for converting the DC to AC; AC terminals, connected with the AC output terminals of the inverter circuits and a three-phase AC power grid, for outputting the AC generated by the inverter circuits; wherein DC input terminals of each inverter circuit are connected in parallel with each other, and AC output terminals are connected with one phase of the three-phase AC power grid and a neutral wire via the AC terminals. The invention further provides a solar photovoltaic generation system. The invention connects DC sides of three single-phase inverter circuits in parallel, which can simply eliminate ripple power at DC side input terminals in a three-phase micro-inverter.

Abstract translation: 本发明提供了一种太阳能光伏三相微逆变器，包括直流端子，与三个用于接收直流的DC光伏组件连接; 三个单相逆变器电路，具有通过端子与DC光伏组件连接的DC输入端，用于将DC转换成AC; 与逆变器电路的交流输出端子连接的交流端子和三相交流电网，用于输出由逆变器电路产生的交流; 其中每个逆变器电路的直流输入端子彼此并联连接，并且AC输出端子通过AC端子与三相交流电网和中性线的一相连接。 本发明还提供了一种太阳能光伏发电系统。 本发明并联三相逆变电路的直流侧，可以简单地消除三相微逆变器直流侧输入端的纹波功率。